Unicorn reference.
+0| Titles don't count, no need to put them in your reveal
Contain the blood; keep it clean.
"While her family is not racist, they are partially proud of their 'clean' blood lines. Arwen plans to only mate with unicorns to respect the wishes of her ancestors, while just befriending equines and pegasus." - Profile. Arwen is born from a racist unicorn (Crowley) and a unicorn who wants to keep the bloodline clean (Arah) and wishes to continue this tradition herself.
+1| Good profile ref
Summer's sun is shining down on thee,
Has golden mane, tail and markings (summer sun shining down)
+1| Good, this seemed like a color ref to me
Virginity is indicated by coat so pristine;
Obviously, as a foal Arwen is a virgin, but virginity was meant to indicate a white coat "so pristine", as white is typically associated with virginity.
+1| I thought this made sense, I was thinking that pristine either meant white or unmarked coat. Viriginity made me lean towards white.
But I wonder, why do you want to be royalty?
On her profile, she is described as power-hungry and "ever faithful to her family and wants to see them in power".
+0| I don't know that power necessarily means royalty, though I understand where you were coming from with this.
+3| Pass
You would take all three, per the site rules, if this stealth passes